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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] ppc4xx: AMCC PPC460GT/EX PCI-E de-emphasis adjustment fix
Date: Fri, 22 Aug 2008 21:41:16 +0200	[thread overview]
Message-ID: <200808222141.16391.sr@denx.de> (raw)
In-Reply-To: <AC5E1C3367E37D44970B81A6ADD1DA2C05D79282@SDCEXCHANGE01.ad.amcc.com>

Hi Marri,

On Friday 22 August 2008, Tirumala Reddy Marri wrote:
>   There were silent corruptions I noticed during a RAID-5 test using
> silicon image card. Then I hooked up a analyzer and found that eye
> diagram was not wide enough. After  reducing the de-emphasis value I
> noticed better eye diagram. Also I ran 72 hour test which was successful
> to see if there are any corruptions .

Did you run this on a Canyonlands? If yes, which PCIe slot did you use?

>    Even though these de-emphasis values are only applicable to Linux. I
> wanted to make sure both Linux and u-boot are in sync.

Yes, makes perfect sense. I'll push this into my repository later.

Thanks.

Best regards,
Stefan

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      reply	other threads:[~2008-08-22 19:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-22  4:54 [U-Boot] [PATCH] ppc4xx: AMCC PPC460GT/EX PCI-E de-emphasis adjustment fix fkan at amcc.com
2008-08-22  8:41 ` Stefan Roese
2008-08-22 16:13   ` Tirumala Reddy Marri
2008-08-22 19:41     ` Stefan Roese [this message]

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